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DIY Stompboxes => Building your own stompbox => Topic started by: Mihkel on September 07, 2004, 03:23:58 PM

Title: A bit OT: DIY metronome.
Post by: Mihkel on September 07, 2004, 03:23:58 PM
Can I add a small speaker to this schem (http://circuitos.tripod.cl/schem/r99.gif)? I'd like to keep it as simple as possible
Title: A bit OT: DIY metronome.
Post by: freebird1127 on September 07, 2004, 05:51:48 PM
Maybe a piezo buzzer?  I'm not completely familiar with the operation, but if I remember correctly piezos generate tone off of a DC voltage.  Someone else will have to elaborate...
Title: A bit OT: DIY metronome.
Post by: Paul Perry (Frostwave) on September 07, 2004, 08:27:35 PM
Piezo buzzers are confusing, because there are two things some people call piezo buzzers:
1. the element itself,
and 2. the element with built in oscillator.

In any case, the circuit shown might not work, because it is designed specifically for the led. But, by all means try putting a piezo element across the diode! you should hear a click as the diode goes on and off.
There are many 555 based metronomes that I think would be likelier.
Title: A bit OT: DIY metronome.
Post by: Mihkel on September 08, 2004, 12:58:18 PM
Ok, thanks for the replies. I actually have a piezo buzzer at home. Not just the element, it beeps  :P . I'll see what i can do.
Title: A bit OT: DIY metronome.
Post by: Paul Marossy on September 08, 2004, 01:38:38 PM
There is a 555 based metronome in one of those $1.49 RadioShack 555 circuit books. A very simple build. I just saw it last night...
Title: A bit OT: DIY metronome.
Post by: bazzwazzle on September 08, 2004, 01:43:36 PM
i have that book, lol  :lol:
Title: A bit OT: DIY metronome.
Post by: Paul Marossy on September 08, 2004, 01:55:04 PM
I forget the author's name, but that little metronome circuit is pretty cool...
Title: A bit OT: DIY metronome.
Post by: Mihkel on September 08, 2004, 02:42:29 PM
I found this 555 schematic: http://www.electronics.dit.ie/staff/mtully/555%20folder/555ex5.gif
I'm gonna have to try that.
Title: A bit OT: DIY metronome.
Post by: Paul Marossy on September 08, 2004, 03:41:31 PM
Going from memory, that looks just like the schematic in the RadioShack book I was referring to...

EDIT: Forest Mimms, that's that guy's name, isnt it!? (the guy who wrote those $1.49 books for RadioShack)